Storing energy crops for methane production: effects of solids content and biological additive
Abstract
The effect of storage on chemical characteristics and CH4 yield (taking into account loss of VS during storage) of a mixture of grasses and ryegrass, ensiled as such (low solids content) and after drying (medium and high solids) with and without biological additive, were studied in field and laboratory trials. Up to 87% and 98% of CH4 yield was preserved with low solids grass (initial TS 15.6%) and high solids ryegrass (initial TS 30.4%), respectively, after storage for 6months, while under suboptimal conditions at most 37% and 52% of CH4 yield were lost. Loss in CH4 yield was mainly due to VS loss, presumably caused by secondary fermentation as also suggested by increasing pH during storage. Biological additive did not assist in preserving the CH4 yield.
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Changes in chemical composition during ensiling can compensate or partly compensate for storage losses.
“Hence, changes in chemical composition during ensiling can compensate or partly compensate for storage losses (Herrmann et al., 2011;Pakarinen et al., 2008).”
From Improving aerobic stability and biogas production of maize silage using silage additives (2015) · cites this paper as Pakarinen et al., 2008
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- Authors
- Pakarinen, O., Lehtomäki, A., Rissanen, S., & Rintala, J.
- Affiliations
- University of Jyväskylä (FI)
- Corresponding author
- Pakarinen, Outi
- ORCID
- Rintala, Jukka
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2008-10
- Volume
- 99
- Issue
- 15
- Pages
- 7074-7082
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2109685904
- Cited by
- 113
- References
- 30
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 3 · 2023: 3 · 2022: 6 · 2021: 3 · 2020: 6 · 2019: 6 · 2018: 11 · 2017: 9 · 2016: 9 · 2015: 10 · 2014: 7 · 2013: 8 · 2012: 7
- FWCI
- 18.72
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National IT Industry Promotion Agency
- Sixth Framework Programme
- Topics
- Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
- Physical Sciences › Engineering › Biomedical Engineering › Biofuel production and bioconversion
- Keywords
- energy crops, methane production, silage, solid content, biological additives, secondary fermentation, silage pH, anaerobic digestion
- MeSH terms
- Methane, Crops, Agricultural
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